Bests & Worsts Reviews from Amazon

I had a neglected porcelain tub and tile soapscum/water-stain situation that would have generated some pretty impressive before/after pictures; too bad I didn't take any. What I'll say about drill brushes is that they can give hope to the hopeless. It still required a lot of hands-and-knees work, it's just that the drill supplied the elbow grease and immediately got some results, where my few minutes of manual scrubbing wasn't making a dent. At all. For a bathroom cleanup, I would opt for this before running out and buying one of every bathroom cleaner known to man, it's much cheaper in the long run. None of the products in the bathroom cleaner aisle magically remove anything. (I have seen some folks in forums mention fume-free oven cleaner as a hands-free bathtub cleaner; that's one thing I didn't try. I definitely would not do it in combination with a drill brush slinging product everywhere.) With the drill brushes in the bathroom, I ended up using a Dawn/vinegar/water mix or Bar Keeper's Friend powder for the worst areas. Be careful with bleach products as bristles rotating at high speed can sling product in places you weren't planning for it to go; with any product I'd recommend eye protection. If you have a particularly bad cleanup ahead of you or plan to use drill brushes regularly, I'd recommend a corded drill, which you'll notice many of the detailers/pros using when you search for videos of these in action. Turning these big attachments just ate through the batteries on the 20 volt drill I nominated for this project (admittedly Ni-Cad, but still). I suspect these drill brushes are all being cranked out of the same factory in the People's Republic; I wouldn't waste money on a "name brand" here. With the extension attachment, this was the best deal I found for a set after scouring the usual online sources. From all my searching, it appears that different brush colors denote different stiffness of bristles. Yellow brushes are supposedly for bathroom/tile/porcelain, white for upholstery, black for heavy-duty outdoor-type cleaning. 4 stars; knocking a star off because I noticed some wear to the brushes and lost a few bristles along the way during this first bathroom cleanup.